Definition of Peeping tom

Peeping tom: Peeping tom (voyeurism) is a disorder that involves achieving sexual arousal by observing an unsuspecting and non-consenting person who is undressing or unclothed, and/or engaged in sexual activity. This behavior may conclude with masturbation by the voyeur. The voyeur does not seek sexual contact with the person he is observing. Other names for this behavior are "peeping" or "peeping Tom."